I saw a console not long ago. Because I saw the mixer before, there was no +38V power. Now I'd like to ask what this +38V power supply has to do. What should I pay attention to when using?. What's the harm?. Also please give advice for experts!!!
The phantom power supply is a capacitor mixer or preamplifier for power supplies. Phantom power is also called Simplex Powering. Usually 11 to 48 volts of direct current, while supplying the polarization of the capacitor head and the power consumption of the amplifier circuit. Various condenser microphones consume currents of 1 to 12 ma. Many modern capacitive microphones allow voltages between 9 and 54 volts, and they are internally equipped with rectifiers that accommodate a wide range of voltages.
The studio has always been to each microphone input respectively provide 48 volt phantom power. Since these mixers are powered by mains power, there is virtually no limit to the supply of phantom power. Many condenser microphones for recording studios are also designed to be 48 volts. In fact, they reach the standard current only when they are powered at 48 volts.
Existing phantom power types are available in 3 categories, using voltages of 12, 24, and 48 volts. 12 and 24 volt power supplies are common in battery powered mixers, which are subject to a number of significant limitations due to power problems. Many of the early mixers only supplied 12 or 18 volts phantom power and very little current. Battery powered 12 and 24 volt mixers, such as Shure's FP33, are still in use.
The capacitor microphone is usually composed of two parts, the capacitor head and the pre amplifier. The capacitor head needs a polarization voltage (electret exception), and the pre amplifier also needs to use electricity. All the power they need is supplied by the signal line, but it does not cause problems with the signal transmission. Such power supply is called phantom power supply, and this power supply is called phantom power supply.
Phantom power is the name of the power and associated power tools. It has outstanding advantages such as wide frequency band, straight response curve, high output, small nonlinear distortion and good transient response.
